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- EMDB-49456: Cryo-EM structure of the Class 2 PI3K alpha/KRas complex on POPC/... -

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Entry
Database: EMDB / ID: EMD-49456
TitleCryo-EM structure of the Class 2 PI3K alpha/KRas complex on POPC/POPS nanodiscs
Map datastructure of the Class 2 PI3K alpha/KRas complex on POPC/POPS nanodiscs
Sample
  • Complex: full-length p85 alpha and p110 alpha heterodimer/KRas complex bound to POPC/POPS/MSP1E3D1 nanodiscs
    • Protein or peptide: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
    • Protein or peptide: Phosphatidylinositol 3-kinase regulatory subunit alpha
    • Protein or peptide: Isoform 2B of GTPase KRas
  • Ligand: tert-butyl [2-(2-{[(2P)-2-{4-[4-(2-amino-2-oxoethyl)-2-fluoroanilino]thieno[2,3-d]pyridazin-7-yl}phenyl]oxy}ethoxy)ethyl]carbamate
  • Ligand: MAGNESIUM ION
  • Ligand: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
Keywordslipid kinase / GTPase / ONCOPROTEIN / Transferase-Hydrolase complex
Function / homology
Function and homology information


perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / phosphatidylinositol kinase activity / phosphatidylinositol 3-kinase regulator activity / 1-phosphatidylinositol-3-kinase regulator activity / positive regulation of endoplasmic reticulum unfolded protein response / regulation of actin filament organization / negative regulation of actin filament depolymerization / phosphatidylinositol 3-kinase activator activity ...perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / phosphatidylinositol kinase activity / phosphatidylinositol 3-kinase regulator activity / 1-phosphatidylinositol-3-kinase regulator activity / positive regulation of endoplasmic reticulum unfolded protein response / regulation of actin filament organization / negative regulation of actin filament depolymerization / phosphatidylinositol 3-kinase activator activity / response to butyrate / T follicular helper cell differentiation / IRS-mediated signalling / interleukin-18-mediated signaling pathway / phosphatidylinositol 3-kinase regulatory subunit binding / response to L-leucine / PI3K events in ERBB4 signaling / neurotrophin TRKA receptor binding / positive regulation of focal adhesion disassembly / cellular response to hydrostatic pressure / cis-Golgi network / Dengue Virus Attachment and Entry / Activated NTRK2 signals through PI3K / ErbB-3 class receptor binding / negative regulation of stress fiber assembly / transmembrane receptor protein tyrosine kinase adaptor activity / Activated NTRK3 signals through PI3K / phosphatidylinositol 3-kinase complex, class IB / phosphatidylinositol 3-kinase complex / TORC2 signaling / Co-stimulation by ICOS / RHOD GTPase cycle / positive regulation of protein localization to membrane / Signaling by cytosolic FGFR1 fusion mutants / vasculature development / Nephrin family interactions / RHOF GTPase cycle / kinase activator activity / Signaling by LTK in cancer / 1-phosphatidylinositol-4-phosphate 3-kinase activity / Signaling by LTK / anoikis / RND1 GTPase cycle / phosphatidylinositol 3-kinase complex, class IA / positive regulation of filopodium assembly / RND2 GTPase cycle / MET activates PI3K/AKT signaling / PI3K/AKT activation / relaxation of cardiac muscle / RND3 GTPase cycle / phosphatidylinositol-4,5-bisphosphate 3-kinase / 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity / growth hormone receptor signaling pathway / insulin binding / phosphatidylinositol 3-kinase / natural killer cell mediated cytotoxicity / phosphatidylinositol-3-phosphate biosynthetic process / Signaling by ALK / cardiac muscle cell contraction / RHOV GTPase cycle / 1-phosphatidylinositol-3-kinase activity / vascular endothelial growth factor signaling pathway / RHOB GTPase cycle / negative regulation of macroautophagy / GP1b-IX-V activation signalling / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / PI-3K cascade:FGFR3 / response to mineralocorticoid / response to dexamethasone / GMP binding / forebrain astrocyte development / PI-3K cascade:FGFR2 / PI-3K cascade:FGFR4 / positive regulation of protein kinase activity / LRR domain binding / negative regulation of epithelial cell differentiation / PI-3K cascade:FGFR1 / regulation of synaptic transmission, GABAergic / RHOJ GTPase cycle / RHOC GTPase cycle / response to isolation stress / phosphatidylinositol phosphate biosynthetic process / response to gravity / epithelial tube branching involved in lung morphogenesis / type I pneumocyte differentiation / Synthesis of PIPs at the plasma membrane / skeletal muscle cell differentiation / RHOU GTPase cycle / phosphatidylinositol-mediated signaling / Rac protein signal transduction / CDC42 GTPase cycle / RET signaling / negative regulation of anoikis / myoblast proliferation / Interleukin-3, Interleukin-5 and GM-CSF signaling / Signaling by RAS GAP mutants / Signaling by RAS GTPase mutants / Activation of RAS in B cells / T cell differentiation / PI3K events in ERBB2 signaling
Similarity search - Function
Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3Kalpha, catalytic domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / PI3-kinase family, p85-binding domain / PI3-kinase family, p85-binding domain / Rho GTPase-activating protein domain ...Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3Kalpha, catalytic domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / PI3-kinase family, p85-binding domain / PI3-kinase family, p85-binding domain / Rho GTPase-activating protein domain / RhoGAP domain / Rho GTPase-activating proteins domain profile. / GTPase-activator protein for Rho-like GTPases / Phosphatidylinositol 3-kinase, adaptor-binding domain / Phosphatidylinositol 3-kinase adaptor-binding (PI3K ABD) domain profile. / PI3-kinase family, Ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain / PI3-kinase family, ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain profile. / Rho GTPase activation protein / C2 phosphatidylinositol 3-kinase-type domain / Phosphoinositide 3-kinase C2 / C2 phosphatidylinositol 3-kinase (PI3K)-type domain profile. / Phosphoinositide 3-kinase, region postulated to contain C2 domain / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase, accessory (PIK) domain superfamily / Phosphoinositide 3-kinase, accessory (PIK) domain / Phosphatidylinositol kinase / PIK helical domain profile. / Phosphatidylinositol 3- and 4-kinases signature 1. / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Small GTPase, Ras-type / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / Small GTPase Ras domain profile. / Ran (Ras-related nuclear proteins) /TC4 subfamily of small GTPases / C2 domain superfamily / SH2 domain / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Src homology 2 (SH2) domain profile. / Src homology 2 domains / Rab subfamily of small GTPases / SH2 domain / Src homology 3 domains / SH2 domain superfamily / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3 domain / Small GTP-binding protein domain / Armadillo-type fold / Ubiquitin-like domain superfamily / Protein kinase-like domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
GTPase KRas / Phosphatidylinositol 3-kinase regulatory subunit alpha / Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.23 Å
AuthorsTorosyan H / Natalia J / Verba KA
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)U54CA274502 United States
CitationJournal: bioRxiv / Year: 2025
Title: Structures of the PI3Kα/KRas complex on lipid bilayers reveal the molecular mechanism of PI3Kα activation.
Authors: Hayarpi Torosyan / Michael D Paul / Allison Maker / Brigitte G Meyer / Natalia Jura / Kliment A Verba
Abstract: PI3Kα is a potent oncogene that converts PIP2 to PIP3 at the plasma membrane upon activation by receptor tyrosine kinases and Ras GTPases. In the absence of any structures of activated PI3Kα, the ...PI3Kα is a potent oncogene that converts PIP2 to PIP3 at the plasma membrane upon activation by receptor tyrosine kinases and Ras GTPases. In the absence of any structures of activated PI3Kα, the molecular details of its activation remain unknown. Here, we present cryo-EM structures of the PI3Kα/KRas complex embedded in lipid nanodiscs, revealing a rich ensemble of PI3Kα states adopted at the membrane surface. The sequential addition of a lipid bilayer, PIP2 and an activating phosphopeptide leads to the progressive release of key inhibitory domains from the PI3Kα catalytic core, which directly correlates with the reorganization of its active site. While association with POPC/POPS nanodiscs partially relieves PI3Kα autoinhibition, incorporation of PIP2 triggers near-complete displacement of PI3Kα inhibitory domains and significant restructuring of active site regulatory motifs. The addition of the activating phosphopeptide induces dimerization of the PI3Kα/KRas complex through a p110α catalytic subunit-mediated interface that is sterically occluded in autoinhibited PI3Kα. In cells, this dimeric PI3Kα complex amplifies Akt signaling in response to growth factor stimulation. Collectively, our structures map the conformational landscape of PI3Kα activation and reveal previously unexplored interfaces for potential therapeutic targeting.
History
DepositionFeb 25, 2025-
Header (metadata) releaseMay 27, 2026-
Map releaseMay 27, 2026-
UpdateMay 27, 2026-
Current statusMay 27, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_49456.png

Downloads & links

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Map

FileDownload / File: emd_49456.map.gz / Format: CCP4 / Size: 343 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationstructure of the Class 2 PI3K alpha/KRas complex on POPC/POPS nanodiscs
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.82 Å/pix.
x 448 pix.
= 366.867 Å		0.82 Å/pix.
x 448 pix.
= 366.867 Å		0.82 Å/pix.
x 448 pix.
= 366.867 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.8189 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.317
Minimum - Maximum-1.5398446 - 2.5350547
Average (Standard dev.)-0.00027554148 (±0.03450781)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions448448448
Spacing448448448
CellA=B=C: 366.8672 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_49456_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map B

Fileemd_49456_half_map_1.map
AnnotationHalf Map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map A

Fileemd_49456_half_map_2.map
AnnotationHalf Map A
Projections & Slices
AxesZYX

Projections

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Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : full-length p85 alpha and p110 alpha heterodimer/KRas complex bou...

EntireName: full-length p85 alpha and p110 alpha heterodimer/KRas complex bound to POPC/POPS/MSP1E3D1 nanodiscs
Components
  • Complex: full-length p85 alpha and p110 alpha heterodimer/KRas complex bound to POPC/POPS/MSP1E3D1 nanodiscs
    • Protein or peptide: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
    • Protein or peptide: Phosphatidylinositol 3-kinase regulatory subunit alpha
    • Protein or peptide: Isoform 2B of GTPase KRas
  • Ligand: tert-butyl [2-(2-{[(2P)-2-{4-[4-(2-amino-2-oxoethyl)-2-fluoroanilino]thieno[2,3-d]pyridazin-7-yl}phenyl]oxy}ethoxy)ethyl]carbamate
  • Ligand: MAGNESIUM ION
  • Ligand: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER

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Supramolecule #1: full-length p85 alpha and p110 alpha heterodimer/KRas complex bou...

SupramoleculeName: full-length p85 alpha and p110 alpha heterodimer/KRas complex bound to POPC/POPS/MSP1E3D1 nanodiscs
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 232.609 KDa

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Macromolecule #1: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit ...

MacromoleculeName: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform
type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: phosphatidylinositol-4,5-bisphosphate 3-kinase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 127.822578 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSYYHHHHHH DYDIPTTENL YFQGAMGSMP PRPSSGELWG IHLMPPRILV ECLLPNGMIV TLECLREATL ITIKHELFKE ARKYPLHQL LQDESSYIFV SVTQEAEREE FFDETRRLCD LRLFQPFLKV IEPVGNREEK ILNREIGFAI GMPVCEFDMV K DPEVQDFR ...String:
MSYYHHHHHH DYDIPTTENL YFQGAMGSMP PRPSSGELWG IHLMPPRILV ECLLPNGMIV TLECLREATL ITIKHELFKE ARKYPLHQL LQDESSYIFV SVTQEAEREE FFDETRRLCD LRLFQPFLKV IEPVGNREEK ILNREIGFAI GMPVCEFDMV K DPEVQDFR RNILNVCKEA VDLRDLNSPH SRAMYVYPPN VESSPELPKH IYNKLDKGQI IVVIWVIVSP NNDKQKYTLK IN HDCVPEQ VIAEAIRKKT RSMLLSSEQL KLCVLEYQGK YILKVCGCDE YFLEKYPLSQ YKYIRSCIML GRMPNLMLMA KES LYSQLP MDCFTMPSYS RRISTATPYM NGETSTKSLW VINSALRIKI LCATYVNVNI RDIDKIYVRT GIYHGGEPLC DNVN TQRVP CSNPRWNEWL NYDIYIPDLP RAARLCLSIC SVKGRKGAKE EHCPLAWGNI NLFDYTDTLV SGKMALNLWP VPHGL EDLL NPIGVTGSNP NKETPCLELE FDWFSSVVKF PDMSVIEEHA NWSVSREAGF SYSHAGLSNR LARDNELREN DKEQLK AIS TRDPLSEITE QEKDFLWSHR HYCVTIPEIL PKLLLSVKWN SRDEVAQMYC LVKDWPPIKP EQAMELLDCN YPDPMVR GF AVRCLEKYLT DDKLSQYLIQ LVQVLKYEQY LDNLLVRFLL KKALTNQRIG HFFFWHLKSE MHNKTVSQRF GLLLESYC R ACGMYLKHLN RQVEAMEKLI NLTDILKQEK KDETQKVQMK FLVEQMRRPD FMDALQGFLS PLNPAHQLGN LRLEECRIM SSAKRPLWLN WENPDIMSEL LFQNNEIIFK NGDDLRQDML TLQIIRIMEN IWQNQGLDLR MLPYGCLSIG DCVGLIEVVR NSHTIMQIQ CKGGLKGALQ FNSHTLHQWL KDKNKGEIYD AAIDLFTRSC AGYCVATFIL GIGDRHNSNI MVKDDGQLFH I DFGHFLDH KKKKFGYKRE RVPFVLTQDF LIVISKGAQE CTKTREFERF QEMCYKAYLA IRQHANLFIN LFSMMLGSGM PE LQSFDDI AYIRKTLALD KTEQEALEYF MKQMNDAHHG GWTTKMDWIF HTIKQHALN

UniProtKB: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform

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Macromolecule #2: Phosphatidylinositol 3-kinase regulatory subunit alpha

MacromoleculeName: Phosphatidylinositol 3-kinase regulatory subunit alpha
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 83.710281 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: MSAEGYQYRA LYDYKKEREE DIDLHLGDIL TVNKGSLVAL GFSDGQEARP EEIGWLNGYN ETTGERGDFP GTYVEYIGRK KISPPTPKP RPPRPLPVAP GSSKTEADVE QQALTLPDLA EQFAPPDIAP PLLIKLVEAI EKKGLECSTL YRTQSSSNLA E LRQLLDCD ...String:
MSAEGYQYRA LYDYKKEREE DIDLHLGDIL TVNKGSLVAL GFSDGQEARP EEIGWLNGYN ETTGERGDFP GTYVEYIGRK KISPPTPKP RPPRPLPVAP GSSKTEADVE QQALTLPDLA EQFAPPDIAP PLLIKLVEAI EKKGLECSTL YRTQSSSNLA E LRQLLDCD TPSVDLEMID VHVLADAFKR YLLDLPNPVI PAAVYSEMIS LAPEVQSSEE YIQLLKKLIR SPSIPHQYWL TL QYLLKHF FKLSQTSSKN LLNARVLSEI FSPMLFRFSA ASSDNTENLI KVIEILISTE WNERQPAPAL PPKPPKPTTV ANN GMNNNM SLQDAEWYWG DISREEVNEK LRDTADGTFL VRDASTKMHG DYTLTLRKGG NNKLIKIFHR DGKYGFSDPL TFSS VVELI NHYRNESLAQ YNPKLDVKLL YPVSKYQQDQ VVKEDNIEAV GKKLHEYNTQ FQEKSREYDR LYEEYTRTSQ EIQMK RTAI EAFNETIKIF EEQCQTQERY SKEYIEKFKR EGNEKEIQRI MHNYDKLKSR ISEIIDSRRR LEEDLKKQAA EYREID KRM NSIKPDLIQL RKTRDQYLMW LTQKGVRQKK LNEWLGNENT EDQYSLVEDD EDLPHHDEKT WNVGSSNRNK AENLLRG KR DGTFLVRESS KQGCYACSVV VDGEVKHCVI NKTATGYGFA EPYNLYSSLK ELVLHYQHTS LVQHNDSLNV TLAYPVYA Q QRR

UniProtKB: Phosphatidylinositol 3-kinase regulatory subunit alpha

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Macromolecule #3: Isoform 2B of GTPase KRas

MacromoleculeName: Isoform 2B of GTPase KRas / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO / EC number: small monomeric GTPase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 21.516656 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString:
GMTEYKLVVV GAGGVGKSAL TIQLIQNHFV DEYDPTIEDS YRKQVVIDGE TCLLDILDTA GQEEYSAMRD QYMRTGEGFL CVFAINNTK SFEDIHHYRE QIKRVKDSED VPMVLVGNKC DLPSRTVDTK QAQDLARSYG IPFIETSAKT RQGVDDAFYT L VREIRKHK EKMSKDGKKK KKKSKTKCVI M

UniProtKB: GTPase KRas

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Macromolecule #4: tert-butyl [2-(2-{[(2P)-2-{4-[4-(2-amino-2-oxoethyl)-2-fluoroanil...

MacromoleculeName: tert-butyl [2-(2-{[(2P)-2-{4-[4-(2-amino-2-oxoethyl)-2-fluoroanilino]thieno[2,3-d]pyridazin-7-yl}phenyl]oxy}ethoxy)ethyl]carbamate
type: ligand / ID: 4 / Number of copies: 1 / Formula: A1AZD
Molecular weightTheoretical: 581.658 Da

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Macromolecule #5: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 5 / Number of copies: 1 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #6: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER

MacromoleculeName: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER / type: ligand / ID: 6 / Number of copies: 1 / Formula: GNP
Molecular weightTheoretical: 522.196 Da
Chemical component information

ChemComp-GNP:
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER / GppNHp, GMPPNP, energy-carrying molecule analogue*YM

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5 / Details: 50 mM Tris-HCL, 150 mM NaCl, 1mM TCEP
GridModel: Quantifoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - Material: GRAPHENE OXIDE / Support film - topology: HOLEY
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 5 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 47.7 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm / Nominal magnification: 105000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 2870914
CTF correctionSoftware - Name: cryoSPARC (ver. 4.3.1) / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.23 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 4.3.1) / Number images used: 114960
Initial angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.3.1)
Final angle assignmentType: MAXIMUM LIKELIHOOD / Software - Name: cryoSPARC (ver. 4.3.1)
FSC plot (resolution estimation)

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